Water-heater.



- PATENTED MAY 24, 1904.

'No. 760,689. r

G. HALL.

WATER HEATER. APPLIOA'TIOH 171mm m, 14. 100:

N0 MODEL.

Patented. May 24, 1904.

UNITED STATES P TENT OFFICE,

JACOB G. HALL, OF BUOKHANNON, WEST VIRGINIA.

WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 760,689, dated May 24',1904.

7 Application filed January 14, 1903. Serial No. 139,037. (No model.)

fication.

This invention relates to certain improvements in devices of that classin which the waste heat of lamps, gas-burners, and the like is utilizedfor heating water.

The principal object of the invention is to provide a heater or boilerof simple and economical construction by which the heat resultingfromthe combustion of gas and oil may be utilized for the heating of aroom or apartment.

A further object of the invention is to provide a device of thischaracter in which provision is made for the more perfect circulation ofwater in order that the heat may be more readily absorbed.

With these and other objects in view the invention consists in the novelconstruction and arrangement of parts hereinafter described, illustratedin the accompanying drawings, and particularly pointed out in theappended claim, it being understood that various changes in the form,proportions, size, and minor details of the structure may be madewithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings, Figure 1 is a sectional elevation of 'awater-heating device constructed in accordance with the invention. Fig.2 is an elevation illustrating a slight modification of the invention.

In the drawings, 1 designates the main heater, which is formed of a pairof concentrically-disposed cylinders 2 and 3, between which is anannular water-space. The lower ends of the drum are connected by anannular ring 4, leaving the inner cylinder open to permit the entrancethereinto of the products of combustion from a gas-jet or lamp 5, whichmay be' of any ordinary construction. The upper end of the outer,cylinder 2 is connected by a pipe 6rwith an elevated water-tank 7 havinga removable lid or cover 8, which may be taken off when it is desired toreplenish the'supply of water,- and near the lower portion of the tankis atap 9, through which water may be withdrawn for consumption.

Fitting within the inner cylinder 3 is'a small cylindrical shield 10,which may be vertically adjusted in order to surround the gas-burner orlamp, the shield being lowered in order to direct all of the products ofcombustion into the inner cylinder when it is-desired to use the samesolely for heating'purposes; but when the light is to be used as well asthe heat the shield is raised to the required height, and theconstruction is such that the apparatus may be conveniently used forheating a bedroom or the like, the gas burner or lamp being turned onfull throughout the night, While the shield will inclose the burner orlamp, so as to leave the room in darkness, or it may be adjustedvertically to a greater or less extent in order to partly light theroom. The heat is concentrated in the inner cylinder 3 and is absorbedby the water, the waste and cool products of combustion escaping throughan outlet-flue 11, and said flue is preferably provided with a smallvalve in the form of a pivotally-mounted disk 12, by which'the escapemaybe regulated and a volume of heated gases maintained in the interiorof the cylinder 3, although for practical purposes it is'desirable toallow the waste gases to escape at a suflicient speed to permit the lampor gas-jet to burn freely.

The annular water-space is connected to a coiled pipe 13, which may beled around the walls of a room for heating purposes, the top of the coilbeing connected to the upperend of the outer cylinder 2 and the bottomof the coil connected to the lower end of said cylinder to provide for aperfect circulation and to return the cooled water to the lowest portionof the cylinders at the point nearest the flame. Y

In some cases, as shown in Fig. 2, the coiled pipe may be wound in ahelical form around the heater, or it may be connected to any ordinaryform of radiator or the like. I

Having thus described the invention, what is claimed is- A water-heaterin which gas or other lamps are employed as heating agents, said heatercomprising a pair of concentrically-disposed cylinders 2 and 3 havingdome-shaped upper ends and connected at their ends thereby to form acontinuous annular water-space, a Water-receiving vessel 7 arrangedabove the heater, a connecting-pipe 6 between the waterdome and saidvessel, a valved escape-flue 11 leading through the walls of bothcylinders, a circulating-pipe having its opposite ends connectedrespectively to the upper and lower portions of the water-space, anadjustable shield fitting snugly Within the inner of the

